Pipe in heater for heating endoscope



FIG. 1 is a perspective view of a pipe heater for heating an endoscope showing my new design;

FIG. 2 is a right side view thereof, the left side being the same;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a front view thereof; and

FIG. 6 is a rear view thereof. 

The ornamental design for pipe in heater for heating endoscope, as shown and described. 